Project description:This SuperSeries is composed of the following subset Series: GSE26667: Expression array using Maffucci tumours GSE26674: SNP array analysis on Maffucci tumours Refer to individual Series
Project description:We did whole genome analysis of enchondromas and chondrosarcomas of Maffucci patients. Since the disease is very rare, we had only three frozen tumour samples were available to continue with the expression array. Enchondromas of Maffucci syndrome did not show any loss of heterozygosity (LOH) or common copy number alterations (CNA) and we looked at the differentially expressed genes between Ollier high grade and Maffucci high grade tumours. There were no significant differentially expressed genes were found between these two groups. This might be due to the small sample size. We used Affymetrix SNP 6.0 array on enchondromas (n=4) and chondrosarcomas (n=2) and compared the results to a previously studied cohort of patients with Ollier disease (n = 37). We used Illumina expression array v3 chip on enchondroma (n=1) and chondrosarcomas (n=2) from Maffucci patients.
Project description:We did whole genome analysis of enchondromas and chondrosarcomas of Maffucci patients. Since the disease is very rare, we had only three frozen tumour samples were available to continue with the expression array. Enchondromas of Maffucci syndrome did not show any loss of heterozygosity (LOH) or common copy number alterations (CNA) and we looked at the differentially expressed genes between Ollier high grade and Maffucci high grade tumours. There were no significant differentially expressed genes were found between these two groups. This might be due to the small sample size.
Project description:41 lung adenocarcinoma from never-smokers hybridized on Illumina SNP arrays on 13 HumanCNV370-Quadv3 chips. High-resolution array comparative genomic hybridization analysis of lung adenocarcinoma in 41 never smokers for identification of new minimal common regions (MCR) of gain or loss. The SNP array analysis validated copy-number aberrations and revealed that RB1 and WRN were altered by recurrent copy-neutral loss of heterozygosity.The present study has uncovered new aberrations containing cancer genes. The oncogene FUS is a candidate gene in the 16p region that is frequently gained in never smokers. Multiple genetic pathways defined by gains of MYC, deletions of RB1 and WRN or gains on 7p and 7q are involved in lung adenocarcinoma in never smokers. A 'Cartes d'Identite des Tumeurs' (CIT) project from the French National League Against Cancer (http://cit.ligue-cancer.net) 41 samples hybridized on Illumina SNP arrays. Submitter : Fabien PETEL petelf@ligue-cancer.net . Project leader : Pr Pierre FOURET pierre.fouret@psl.aphp.fr
Project description:Here we have used four enchondromas and two chondrosarcomas of Maffucci patients. We also had one normal sample available for paired analysis in one of the chondrosarcoma II. We did not find any LOH or coomon copy number variation in all Maffucci enchondromas while chondrosarcomas are genetically unstable. Affymetrix SNP 6.0 array was performed using 4 EC and 2CS of Maffucci patients. Illumina expression v3 array was possible to perform using only 1 EC and 2 CS due to rarity of the disease. For SNP array, we used 29 control samples submitted previously (GSE22965) to creat baseline.